Technical grade Silicon Oils
Description
Silicon Oils are clear, white, inert and odourless dimethyl polysiloxane fluids. The actual viscosity is controlled within +5% of the desired viscosity. These fluids are manufactured in the viscosity range from 20 cps to 300.000 cps.
In chemical structure Silicon Oils are quite different from other fluids having a backbone of silicon-oxygen linkage. The advantage of this is a linkage much stronger than a typical carbon- carbon chain and is more resistant to attack by temperature extremes, oxidation, shear stresses and chemicals than other similar organic fluids and also show good dielectric properties Silicon Oils are soluble in hydrocarbon solvents, chlorinated hydrocarbon solvents and low molecular weight aromatic solvents. They have limited solubility in alcohols, ethers, acetone and glycols (solubility here depending on viscosity).
Applications
Silicon Oils have numerous applications in almost every industry:
Benefits
The unique chemical structure permits silicone fluids to perform in applications where other fluids are not suitable.
Typical performance data
Technical grade dimethyl silicone fluids | 20 | 50 | 100 | 350 | 500 | 1000 | 10000 | 60000 | 1000000 |
Appearance, clarity and odour | Colourless, clear and odourless | ||||||||
Specific gravity @ 25 °C | 0.940 | 0.959 | 0.965 | 0.973 | 0.970 | 0.974 | 0.975 | 0.977 | 0.976 |
Nominal viscosity @ 25 °C, cPs | 20 | 50 | 100 | 350 | 500 | 1000 | 10000 | 60000 | 1000000 |
Refractive index @ 25 °C | 1.405 | 1.402 | 1.405 | 1.405 | 1.403 | 1.405 | 1.405 | 1.405 | 1.404 |
Flash point open cup, °C | 230 | 280 | >300 | >300 | >300 | >300 | >300 | >300 | >300 |
Pour point, °C | -60 | -55 | -55 | -50 | -50 | -50 | -50 | -50 | -40 |
Auto ignition temperature, °C | >400 | >400 | >400 | >400 | >400 | >400 | >400 | >400 | >400 |
Dielectric Strength @ 25°C, volts/mil |
- | 400 | 400 | 400 | - | 400 | - | - | - |
Volume Resistivity @ 25°C, ohm-cm |
- | 1.0x1015 | 1.0x1015 | 1.0x1015 | - | 1.0x1015 | - | - | - |
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